Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 8 6.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 08/08/2025   21:47:00   ( -71.06,  28.09) 08/08/2025   21:48:06  ( -71.00,  30.72)   95.56                66
 08/08/2025   22:37:27   (  70.09,-163.03) 08/08/2025   22:37:48  (  70.08,-163.01)    1.26                21
 08/08/2025   23:28:09   ( -69.97,   4.46) 08/08/2025   23:27:18  ( -69.97,   4.47)    0.32                51
 08/11/2025   14:03:39   ( -70.26, 145.15) 08/11/2025   14:04:50  ( -70.21, 145.41)   11.57                71
 08/11/2025   14:54:20   (  70.02, -47.17) 08/11/2025   14:54:18  (  70.05, -47.17)    2.64                 2
 08/11/2025   15:45:02   ( -69.90, 120.33) 08/11/2025   15:43:49  ( -69.89, 120.23)    4.16                73
 08/14/2025   06:20:31   ( -70.10, -98.82) 08/14/2025   06:21:22  ( -70.11, -98.85)    1.80                51
 08/14/2025   07:11:15   (  70.02,  68.61) 08/14/2025   07:10:49  (  70.00,  68.64)    2.33                26
 08/14/2025   08:01:41   ( -69.05,-122.66) 08/14/2025   08:00:34  ( -69.07,-124.98)   92.24                67
 08/16/2025   22:37:26   ( -70.09,  16.96) 08/16/2025   22:37:52  ( -70.11,  17.02)    2.77                26
 08/16/2025   23:28:09   (  69.97,-175.54) 08/16/2025   23:27:20  (  69.94,-175.57)    3.35                49
 08/19/2025   14:03:40   (  70.28, -34.87) 08/19/2025   14:04:51  (  70.24, -34.54)   13.34                71
 08/19/2025   14:54:20   ( -70.04, 132.81) 08/19/2025   14:54:23  ( -70.03, 132.79)    1.59                 3
 08/19/2025   15:45:03   (  69.91, -59.69) 08/19/2025   15:43:50  (  69.91, -59.72)    1.35                73